"[My co-star] Dominic [Purcell] tells me that we did a Prison Break [panel] at Comic-Con when the show was originally airing," Miller said of the cast being at the convention for the original show, which ran from 2005 to 2009. "I have no recollection of that, but I just trust that he's telling me the truth."

"It's nice to be back, even though I don't remember what happened before," he added. "But it makes sense to me in a strange way that Prison Break is at Comic-Con, because it's got kind of a comic book element to it and always has, so in that way, it feels like a marriage."

Miller is reprising his role as Michael Scofield, and he joked that performing his own stunts once again has been, well, interesting now that he's in his mid-40s.

"[Stunts are] a lot different at 44 then they were at 34," Miller explained. "I do what I can, but if I need my character to look cool and like he knows what he's doing and my stunt double can execute that better, then I'm happy to step aside. It's just in service of telling the best story possible."

In addition to Miller's exciting Prison Break revival gig, he recently entered into a series regular contract with Warner Bros. that will allow him to portray roles in various Greg Berlanti-produced shows simultaneously, including Legends of Tomorrow and The Flash, Deadline first reported.

"Yeah, it's a sweet deal," Miller, who is no longer a series regular on Legends, gushed. "It's the most fun I've had as far as a character."

"I have a lot of respect and love for Michael Scofield, but Captain Cold is a good time, and so the opportunity to kind of pop up and do a little song and dance for The Flash or Legends -- and then get out and then not have to do the expositional heavy lifting that Michael Scofield has to do, it's a good time," he added.

But when it comes to choosing between playing a villain or a hero, the Princeton grad says he doesn't have a preference.

"I like a degree of both," he revealed. "I like characters that are somewhere in the shades of gray -- not strictly black, not strictly white."

Last month, Miller's Prison Break co-star, Purcell, suffered a gruesome injury while filming scenes for the highly anticipated revival when an iron bar fell on top of him, resulting in a major gash in his head and a broken nose.

Miller later described the traumatizing experience in detail when ET visited the show's Vancouver set. Hear more in the video below.